Sterile implant tracking device and method

ABSTRACT

An assembly and method for tracking implant devices within a sterile field, the assembly comprising a reader that includes a housing structure with a base and a cover, a scanner having a scanner housing, where the scanner housing is at least partially positioned in a cavity provided in the base; and an aperture provided in the cover, where the cover is configured to receive a transparent sterile sheath to at least partially encase the cover.

CROSS REFERENCE TO RELATED APPLICATION

This application claims priority to and is a continuation of U.S.Nonprovisional patent application Ser. No. 15/165,201 filed May, 26,2016, which is a continuation of U.S. Nonprovisional patent applicationSer. No. 13/964,308 filed Aug. 12, 2013 and issued as U.S. Pat. No.9,355,289, which is a continuation-in-part of U.S. Nonprovisional patentapplication Ser. No. 13/710,591 filed Dec. 11, 2012 entitled “SterileImplant Tracking Device and Method” and issued as U.S. Pat. No.8,651,385, which is a continuation of U.S. Nonprovisional patentapplication Ser. No. 13/437,161 filed Apr. 2, 2012 entitled “SterileImplant Tracking Device and Method” and issued as U.S. Pat. No.8,430,320, which is a continuation-in-part of U.S. Nonprovisional patentapplication Ser. No. 13/271,343 filed Oct. 12, 2011, and issued as U.S.Pat. No. 8,146,825, which claims the benefit of U.S. Provisional PatentApplication No. 61/512,978 filed Jul. 29, 2011 and U.S. ProvisionalPatent Application No. 61/492,177 filed Jun. 1, 2011, the entire contentof each application is incorporated by reference herein.

BACKGROUND OF THE INVENTION 1. Field of the Invention

This invention relates to an implant tracking system using anoptical-based identification technique.

2. Description of the Related Art

Tracking and managing orthopedic implant replacements is an importanthealth issue. Typically each implant contains a unique identificationnumber, such as, for example, a manufacturer's identification and/orserial number. Whenever an implant is placed, this number is recorded asa permanent record in a database. In the future, this number can bereferenced to track the age of the implant, the manufacturer forpurposes of recall and adjustment, and can be used postmortem toidentify a person having the implant.

The unique identification number may be tracked by identifiers, such asunique labels or other indicia, applied to the product and/or packaging,and the labels may remain associated with the implant until the implantis used. In some cases, product labels include adhesive portions thatcan be applied to a chart or file of a patient to conveniently associatethe medical device with a particular patient.

The numerical values and ranges in this disclosure are exemplary andtherefore can be adjusted to include lower or higher values and rangesas necessary to provide the intended operation of the variousembodiments of the sterile implant tracking device and method.

Identifiers may be any graphic that is capable of retaining identifyinginformation. In some embodiments, the identifier is a one or twodimensional bar code suitable for scanning by an optical scanner such asa bar code reader. The identifier may be a two dimensional (2D) etchedmatrix of 2 millimeters (mm) by 2 mm (2×2 mm) or 1.4 mm by 1.4 mm(1.4×1.4 mm). The identifier may also be a radio frequencyidentification tag that is readable through radio frequency transmissiongenerated by an independently powered RFID device. The identifier mayalso be an RFID tag that includes a transponder and is readable inresponse to a radio frequency signal transmitted to the RFID device. Insome embodiments, the identifier is a human readable visual and/ortactile graphic such as alphanumeric characters that can be manuallyrecorded in a database or chart.

It would be beneficial if physicians were able to obtain additionalinformation about an implant and/or a patient from an implant identifiersuch as the manufacturer and model number of the device, the serialnumber of the device, the treating physician's name and contactinformation, and the patient's name, contact information, medicalcondition and treatment, among other relevant information.

Currently, difficulty arises in tracking medical implants. For example,medical implants are difficult to track because the implants generallydo not have adequate surface area for applying marks. Thus, in manyinstances, implants are not tracked beyond their manufacturing facility,and may only be counted when reconciled for payment as one of manyproducts that were not returned to a manufacturer for replenishment.

There is a strong and growing need to not only track medical implantsbut to do so efficiently while maintaining a sterile operatingenvironment. Therefore, if the tracking system involves a reader, suchas a barcode scanner or RFID reader, then the reader itself needs to besterile so as not to contaminate the medical implant of which it isreading or the personnel operating the reader.

Medical equipment may be sterilized by the use of chemical or physicalagents, for example using hot steam, gas or gamma rays sterilization.However, these means may not be appropriate for more delicate medicalequipment, such as a reader.

There exists a need for a sterile interface for use with a reader thatallows for the efficient use of the reader in a sterile operating roomenvironment.

SUMMARY

In an embodiment, the invention is an assembly for tracking implantscomprising a (i) reader, (ii) medical drape, and (iii) computer. Thereader comprises a (a) scanner, (b) housing structure comprising a coverand base, and optionally (c) transparent sterile sheath having a topsurface and side walls and encases the cover of the housing structure.The cover has an aperture through the top surface of the cover. Themedical drape is attached to the side walls of the transparent sterilesheath. The computer is in communication with the reader.

In an embodiment, the invention is a reader comprising a scanner, ascanner mounting structure supporting the scanner, a housing structurecomprising a cover and base, and an optional transparent sterile sheathencasing the cover of the housing structure. The base comprises a topsurface to receive the scanner mounting structure, an inset groove toreceive the cover, an inset channel extending radially from the cover tothe edge of the top surface of the base, and a removable channel cover.The scanner mounting structure is attached to the base, and both thescanner and mounting structure are enclosed in the housing structure.

In an embodiment, the invention is a method of using a reader comprisingthe steps of providing a reader, placing an implant having an identifieronto the top surface of the transparent sterile sheath above theaperture, and scanning the identifier of the implant to electronicallyrecord the stored data.

In an embodiment, the invention is a tracking assembly comprising areader comprising, a housing structure that includes a base and a cover,a scanner having a scanner housing, where the scanner housing is atleast partially positioned in a cavity provided in the base; and anaperture provided in the cover, where the cover is configured to receivea transparent sterile sheath to at least partially encase the cover.

In an embodiment, the invention is a tracking assembly comprising, areader comprising, a scanner; a scanner mounting structure supportingthe scanner; a housing structure that includes a cover with an apertureon a top surface of the cover and a base secured to the cover, where thehousing structure is configured to receive a one or more coverings to atleast partially enclose the housing structure, where the scannermounting structure is secured to the base, and where the scanner andscanner mounting structure are substantially enclosed in the housingstructure.

In an embodiment, the invention is a method of using a tracking assemblycomprising the steps of: providing a tracking assembly comprising areader that includes a scanner and a housing structure with a coverhaving an aperture on a top surface; covering the cover with atransparent sterile sheath; placing an implant having an identifier overthe aperture; and scanning the identifier of the implant toelectronically record the implant data.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is described generally with reference to the drawings forthe purpose of illustrating certain embodiments only, and not for thepurpose of limiting the scope of the invention. In the drawings, likenumerals are used to designate like parts throughout the same.

FIG. 1 is a schematic of an assembly of an embodiment of the inventionincluding a reader and medical drape.

FIG. 2A is a sectional view of the assembly of FIG. 1.

FIG. 2B is a sectional view of an embodiment of the assembly of FIG. 1.

FIG. 3A is an exploded view of the reader of FIG. 1.

FIG. 3B is an exploded view of an embodiment of the assembly of FIG. 1.

FIG. 4 is an exploded view of the reader of FIG. 3A without the cover.

FIG. 5 is a bottom view of the removable channel cover.

FIG. 6 is a sectional view of the reader of FIG. 2A.

FIG. 7 is a sectional view of FIG. 6.

FIG. 8 is a sectional view of FIG. 6.

FIG. 9 is a top view of the scanner in FIG. 1.

FIG. 10 is a sectional view of FIG. 9.

FIG. 11 is a schematic of a handheld reader and cradle of an embodimentof the invention.

FIG. 12 is a schematic of the handheld reader and a base structure.

FIG. 13A is a schematic of the handheld reader enclosed within a medicaldrape.

FIG. 13B is a schematic of the handheld reader and hand of a userenclosed within a medical drape.

FIG. 14 is a schematic of the reader of FIG. 12 enclosed within thehousing structure of the assembly of FIG. 1.

FIG. 15 is a schematic of another embodiment of the implant trackingassembly that includes a reader, a sheath, and a medical drape.

FIG. 16 is a perspective view of the reader and sheath of FIG. 15.

FIG. 17 is an exploded perspective view of FIG. 16.

FIG. 18 is an exploded perspective view of various portions of thereader of FIG. 15.

FIG. 19 is a sectional side view taken at line 19-19 of FIG. 16.

FIG. 20 is a schematic of an embodiment of the implant trackingassembly.

FIG. 21 is a perspective view of an embodiment of the sheath and drapeof FIG. 20.

FIG. 22 is a side view of the sheath and drape of FIG. 21.

FIG. 23 is a perspective view of another embodiment of the sheath anddrape of FIG. 20.

FIG. 24 is a side view of the sheath and drape of FIG. 23.

FIG. 25 is a perspective view of the sheath and drape of FIG. 20, in anexemplary folded configuration.

FIG. 26 is a sectional side view taken at line 26-26 of FIG. 25.

DETAILED DESCRIPTION

The present disclosure provides a system for tracking implants (e.g.,screws, plates, cages, nuts, rods, etc.). An advantage of the presentmethod for tracking an implant is a vast improvement in sterility andefficiency over current tracking methods. Typically, in an operatingroom, the patient to receive the implant is lying on an operating tablein the center of the room. There is a sterile field extending two tothree feet radially from the operating table. The present assemblycomprising a reader assembled with transparent sterile sheath andsterile medical drape may be inside the sterile field. A computer, incommunication with the reader, is typically outside the sterile fieldand, in certain instances, operated by a person outside the sterilefield. The operator of the computer can log into the software which ispassword protected as the surgery is beginning and input certaininformation such as the patient's name, etc., to save time.

The present method increases efficiency in the operating room bydecreasing the time spent during operation on scanning and trackingevery implant going into the patient while maintaining a sterileenvironment. For example, during spinal surgery, the surgeon requestsnumerous screws, plates, hooks, and cages, and each implant must betracked by recording its manufacturer's information, lot number, serialnumber, etc., in addition to where that screw is implanted in the spine.Using the present assembly, the surgeon would request a screw, forexample, having an identifier on its surface. The assistant would takethe screw out of the sterile package and set the screw down on top ofthe transparent sterile sheath above an aperture on the reader. Thereader would beep to indicate a successful scan of the identifier, andthe assistant would hand the screw to the surgeon for implantation. Theinformation (manufacturer's information, lot number, serial number,etc.) obtained from the identifier by the reader is transferred to thecomputer and the user of the computer can input data that indicateswhere the screw was implanted according to the surgeon's instruction.The location data of where the implant is placed in the patient may beaided by the software, which pulls up an anatomical image where the userof the computer can then just select visually where the implant wasinserted.

Table Top Implant Tracking Assembly

FIG. 1 depicts an embodiment of an implant tracking assembly 10 whichincludes reader 20 and medical drape 24. FIG. 1 shows reader 20comprising an optional transparent sterile sheath 22 that fits,preferably snugly, over the top surface of reader 20. Assembly 10includes medical drape 24 which is temporarily attached to and extendsradially from the side walls of the transparent sterile sheath 22 tocover the remaining elements of the reader, such as possible electricalcords and control panels, among other things. Assembly 10 includes acomputer 25 (not shown) in communication with reader 20. Although FIG. 1shows reader 20 placed on a table, the table is not part of the assembly10. The reader device in assembly 10 may be a table top reader, ahandheld reader, or a table top-handheld reader. The implant trackingassembly 10 can include one or more coverings to provide limitation ofcontaminants to and/or from reader 20, where the one or more coveringscan include the transparent sterile sheath 22 and medical drape 24.

Table Top Reader

FIG. 2A is a sectional view of reader 20. Reader 20 includes scanner 26,scanner mounting structure 30, and housing structure 32 including cover33 and base 34. As seen in FIGS. 2A-4, base 34 of housing structure 32includes a base top surface 36 to receive the scanner mounting structure30, and inset groove 38 to receive the bottom edge of cover 33. One ormore vertical pins 40 may extend up from the bottom of the base throughthe inset groove 38. The shape of the base may be circular as shown inFIG. 1, but as one skilled in the art would understand, the disclosureis not limited to a circular base. In addition, in at least someembodiments, base 34 includes a diameter DI that extends between about 6inches to about 10 inches. Further, base 34 can weigh between about onepound to about four pounds. FIG. 2A shows an embodiment where the basehas a track creating a lip or shelf that allows for easy transport ormobility of the reader by a user inserting their fingers into the trackand picking up the reader. Further, cover 33 and base 34 can beintegrally formed, although the separability of cover 33 and base 34 canallow for insertion/installation of various components inside housingstructure 32, in at least some embodiments, an alternate access may beprovided to facilitate access for insertion of one or more componentstherein if cover 33 and base 34 are integrally formed.

FIG. 3A is an exploded view of housing structure 32 and transparentsterile sheath 22. Housing structure 32 further includes cover 33. Cover33 includes cover top surface 46 and side wall 48, as seen in FIG. 3A.In an embodiment, cover top surface 46 is circular and thus the sidewall 48 is in the shape of a cylinder. Alternatively, cover top surface46 may be square or rectangular, yielding four side walls 48. Side wall48 may have at least one radial pin 52 extending radially out from theside wall 48. The cover top surface 46 has an aperture 54 that may becircular, oblong, square, or any other shape that allows the readerdevice to properly scan a medical implant placed above aperture 54. Sidewall 48 may have at least one pin hole extending vertically into sidewall 48 to receive vertical pin 40. Equivalents of pins are screws,bolts, nails, etc. In an embodiment, cover 33 is engaged with insetgroove 38 of base 34 and vertical pin 40 is engaged with pin hole 50 ofcover 33, securing cover 33 from any lateral movement. Cover 33 may sitin the center of base 34 or, more preferably, off center.

Housing structure 32 is made of an opaque material such as from a densemolded plastic, preferably a dark color, more preferably black.Utilizing a darker color can serve to reduce light noise, such asreflections of light, which can hinder the reader's ability to provideeffective scans. Although in at least some embodiments, one or moreportions of housing structure 32 can be comprised of materials otherthan plastic, as well as lighter colors.

FIG. 4 is an exploded view of base 34, scanner mounting structure 30,and scanner 26. In an embodiment, scanning mounting structure 30 isbolted or otherwise securely fastened to a top surface of removablechannel cover 44. Alternatively, scanning mounting structure 30 isbolted to base top surface 36 of base 34. Scanner 26 is housed inscanner housing 55, which is attached to scanning mounting structure 30by screws that are received into receptacles 56 of scanner housing 55(see FIG. 10). The position of scanner 26 is locked on the focal pointof scanner 26, which is 1-3 millimeters (mm), preferably 1-2 mm, abovethe top surface of cover 33 in the area above aperture 54. When reader20 comprises transparent sterile sheath 22, the focal point is on thesurface of transparent sterile sheath 22 in the area above aperture 54.Alternatively, scanner 26 may be manufactured with adjustable knobs toallow a user to manually adjust the position of the scanner for anoptimal read, as shown in FIGS. 2B and 3B.

Base 34 includes an inset channel 42 extending radially from the scannermounting structure 30 to the edge of base 34 where the electrical cordsfrom scanner 26 lie in inset channel 42 and extend out to a powersource, control panel, or other appropriate source, as shown in FIG. 3B.Preferably, as shown in FIG. 4, inset channel 42 houses circuit board 58which is in communication with scanner 26 and computer 25, typically,via electrical cords or wirelessly. In an embodiment, circuit board 58is equivalent to the circuit board found in Motorola Symbol DS6707-DP.

Circuit board 58 is securely positioned in inset channel 42 in circuitboard mold 60. Circuit board mold 60 is designed such that the outersurface matches the shape of inset channel 42 and the inner surfacematches that of the shape of circuit board 58. Circuit board mold 60 issecured to base 34 by screws or pins and removable channel cover 44 issecured to circuit board mold 60 by screws or pins. In an embodiment,circuit board 58 comprises button 62, which activates scanner 26 to takea scan upon depressing button 62. The inner surface of circuit boardmold 60 is designed such that when circuit board 58 is positioned incircuit board mold 60, button 62 is constantly depressed into the “on”position, which can be seen in FIG. 7.

Removable channel cover 44 is designed such that when in place it ismerely a part of the top surface of the base. Removable channel cover 44may be removed and slid, snapped, or placed back into place coveringinset channel 42. FIG. 5 is a bottom view of an embodiment of removablechannel cover 44. Removable channel cover 44 has two perpendicular slats66, which engage with the inner surface of circuit board mold 60. FIG. 8is a sectional of FIG. 6 that shows removable channel cover 44 furthersecured in place by screws which extend into circuit board mold 60. FIG.6 also shows perpendicular slats 66 of removable channel cover 44engaged with the inner surface of circuit board mold 60.

FIG. 6 is a sectional view of FIG. 2. In an embodiment, magnet 64 ispositioned inside cover 33 and is attached to base 34 or scanner housing55. Most preferably, magnet 64 is built into base 34. Base 34 has a cutout specifically for magnet 64 to be placed into such that magnet 64 isflush with the base top surface 36. Magnet 64 is positioned off centerand closest to the side of button 62. Magnet 64 has sufficient strengthto allow scanner 26 to take a scan only when a user places a scannableobject in the focal point of scanner 26.

FIG. 9 is a top view of scanner 26. Scanner 26 has conical walls 68inside scanner housing 55. Scanner housing 55 includes shield 70, whichextends beyond conical walls 68. Preferably, shield 70 comprises shieldwings 72, which extend further on two opposite sides (see FIG. 4).

In an embodiment, scanner 26 is capable of reading identifiers such asconventional barcodes, etched matrixes, or any other optical indicatoron an implant. In an embodiment, scanner 26 is equivalent to the scannerin Motorola Symbol DS6707-DP. In an embodiment, the reader furthercomprises a light emitting diode (LED) 28 for enhancing the visualindication of scanner 26, as shown in FIGS. 2B and 3B.

In an embodiment, reader 20 comprises an optional transparent sterilesheath 22 as shown in FIGS. 3A and 3B which encases cover 33 of reader20. Transparent sterile sheath 22 can be partially or completelytransparent, while in at least some embodiments, transparent sterilesheath 22 can be provided without transparent portions, provided thatscanner 126 includes the capability to scan identifiers through thelevel of transparency provided by transparent sterile sheath 22. In atleast some embodiments, sterile sheath 22 can be at least partiallyopaque, with the exception of at least a portion that covers aperture54. Transparent sterile sheath 22 has sheath top surface 75 and sheathside wall 76. Preferably, sheath top surface 75 is slightly convex todeflect ambient light. In at least some embodiments, the convex portionof sheath top surface 75 can be substantially limited to the portioncovering aperture 54. The degree of convexity is such that thetransparent sheath reflects ambient light that interferes with thereader. Ambient light is background light typically present in anoperating room. In an embodiment, sheath side wall 76 has at least oneradial pin slot 77 designed to receive radial pin 52 of cover 33. FIG.3A shows an embodiment in which two radial pin slots 77 are in aninverted “L” shape, such that when radial pin 52 of cover 33 engageswith the radial pin slots 77 and the transparent sterile sheath 22 istwisted, it temporarily locks the transparent sterile sheath 22 in placeby hindering vertical movement. One skilled in the art would understandthe transparent sterile sheath could be temporarily locked into placeover cover 33 in various manners. Alternatively, transparent sterilesheath 22 may just rest over cover 33 without any mechanism to lock thesheath in place.

Transparent sterile sheath 22 is designed such that when transparentsterile sheath 22 is engaged with housing structure 32 the area ofsheath top surface 75 directly above aperture 54 of housing structure 32is at the focal point of scanner 26. Placement of an implant with anindicator directly on the sheath top surface 75 directly above aperture54 allows for the scanner to read the indicator without an operatorhaving to hover the implant device over aperture 54 and search for thefocal point of the scanner 26.

In an embodiment, transparent sterile sheath 22 is formed of a singlepiece of rigid transparent plastic. In an embodiment, transparentsterile sheath 22 is formed of a non-conductive, flexible, easilydistortable, resilient material, which can be sterilized. Preferably,transparent sterile sheath 22 is disposable, such that transparentsterile sheath 22 is disposed of after identifiers have been receivedfor all the medical implants implanted in a single patient during anoperation.

The thickness of transparent sterile sheath 22 is such that does notinterfere with the reader device's ability to obtain data from anidentifier on a medical implant. Transparent sterile sheath 22 may bemade of one or more of an elastomer, plastic, rubber, polyethylene, orpolypropylene, among other materials that result in a functioningtransparent sterile sheath 22 of the invention. In an embodiment,transparent sterile sheath 22 is made of a rigid, transparent plasticsuch as polycarbonate.

Transparent sterile sheath 22 may have additional properties thatenhance the reader device's abilities. For example, in an embodiment,the sheath top surface 75 has magnifying abilities to allow a readerdevice to gather information from a smaller identifier such as a barcodeor a 2D-grid or matrix the size of 2 millimeters (mm) by 2 mm, and even1.4 mm by 1.4 mm. In an embodiment, the transparent sterile sheath 22adheres to reader 20 such that the seal between transparent sterilesheath 22 and cover top surface 46 creates a vacuum between transparentsterile sheath 22 and the reader device. A vacuum between reader 20 andtransparent sterile sheath 22 allows for improved reading of reader 20.

Assembly 10 comprising table top reader 20 further increases theefficiency of implant tracking by allowing a user to place the implanthaving the identifier on the surface of a transparent sheath for anaccurate, automatic scan of the identifier. The user is not having tospend precious time waving/hovering the implant in front of a handheldreader to find the focal point of the scanner to obtain a scan duringsurgery. The inventive structure of reader 20 provides an efficient andsterile implant tracking device.

Handheld Reader

FIGS. 11-14 are embodiments of an assembly comprising handheld reader 80including reader lens 82 and handle 84. Handheld reader 80 contains anoptical scanner. In an embodiment, the optical scanner is equivalent tothat found in Motorola Symbol DS6707-DP. FIG. 11 is an embodiment of anassembly comprising a handheld reader 80 positioned in cradle 86,wherein handheld reader 80 is detachably connected to the cradle.Handheld reader 80 further comprises transparent sterile lens cover 88which allows for an implant bearing an identifier to come into closeproximity to the lens cover 88 for scanning without compromising theimplant's sterility. Transparent sterile lens cover 88 may havemagnifying abilities to allow the reader device to gather informationfrom a smaller barcode or a 2D-grid or matrix the size of 2 millimeters(mm) by 2 mm, and even 1.4 mm by 1.4 mm. The focal point of the scanneris just above (1-2 mm) the surface of transparent sterile lens cover 88.

FIG. 12 shows an embodiment of handheld reader 80 further comprisingbase structure 90 built off of handle 84 of the handheld reader thatallows the user to place handheld reader 80 on a flat surface andoperate handheld reader 80 without holding onto it. FIG. 12 showstransparent sterile lens cover 88 engaged with reader lens 82. In anembodiment, transparent sterile lens cover 88 releasably attaches toreader lens 82 to temporarily fix transparent sterile lens cover 88 inplace over reader lens 82 of handheld reader 80. In an embodiment,transparent sterile lens cover 88 snaps into place over reader lens 82with the application of minor force.

Table Top-Handheld Reader

In an embodiment shown in FIG. 14, handheld reader 80 is placed insidehousing structure 32 of FIG. 1 by replacing scanner 26 and scannermounting structure 30. Handheld reader 80 may be positioned in cradle 86which is secured and/or mounted to base 34. In an embodiment, handheldreader 80 does not contain handle 84. Alternatively, handheld reader 80may comprise base structure 90 which is mounted to base 34. Reader lens82 is positioned below aperture 54 which is covered by transparentsterile sheath 22 such that the focal point of handheld reader 80 is onor right above the surface of transparent sterile sheath 22 in the areaabove aperture 54. As a typical handheld reader is operated by a triggeron handle 84, a scanner switch 92 may be positioned on base 34 outsideof cover 33 which allows the user to press to activate handheld reader80. Alternatively, magnet 64 may be positioned near handheld reader 80to keep handheld reader 80 activated and continually taking scans whenan implant having an identifier is placed on the focal point. Thehandheld reader 80 may or may not include transparent sterile lens cover88. Any of the transparent sterile sheath 22, transparent sterile lenscover 88 and reader lens 82 may have magnifying abilities that arecompatible with each other.

Medical Drape

Assembly 10 further comprises a medical drape. Medical drape 24 may bemade of conventional medical drape material. Alternatively, medicaldrape 24 is transparent and flexible to enable use of a control panel ona reader device. Medical drape 24 may allow for the manipulation ofbuttons, calibrating dials, and adjusting knobs frequently associatedwith reader 20.

As shown in FIGS. 1, 2A, and 2B, medical drape 24 temporarily attachesto side wall 76 of transparent sterile sheath 22 and extends outradially to maintain a sterile environment. Medical drape 24 maycomprise an elastic band to attach to sheath side wall 76.Alternatively, medical drape 24 may clip onto sheath side wall 76 forattachment. Any attachment mechanism may be used to attach medical drape24 to sheath side wall 76. In at least some embodiments, medical drape24 can be permanently adhered to sheath side wall 76 prior toinstallation on reader 20.

FIGS. 13A and 13B show an embodiment in which medical drape 24 isattached to transparent sterile lens cover 88 of handheld reader 80.Medical drape 24 unrolls from lens cover 88 and creates a barrierbetween the reader device and the sterile environment. In the situationdepicted in FIG. 13A, the user, usually wearing a sterile glove, wouldgenerally operate handheld reader 80 by holding reader 80 on top ofmedical drape 24. Alternatively, as shown in FIG. 13B, the medical drapeis designed to fit over the user's hand.

Medical drape 24 may be made of conventional medical drape material,although various other materials can be utilized alone or incombination. Alternatively, medical drape 24 is transparent and flexibleto enable use of a control panel on a reader device. Medical drape 24may allow for the manipulation of buttons, calibrating dials, andadjusting knobs frequently associated with reader 80.

Computer

Assembly 10 comprises computer 25 in communication with reader 20.Computer 25 is equipped with software that allows recording andmanipulation of input data from reader 20. The software is designed toreceive information (manufacturer's information, lot number, serialnumber, etc.) obtained from the identifier upon being scanned by thereader. The software further allows the user of the computer to inputdata that indicates where the screw was implanted according to thesurgeon's instruction. The location data of where the implant is placedin the patient may be aided by the software, which pulls up ananatomical image where the user of the computer can then just selectvisually where the implant was inserted. Computer 25 is usually outsidethe sterile field. Alternatively, the computer may be part of the sameassembly as the reader. The term computer is meant to encompass desktopcomputers, laptops, tablets, and pads, among others, as well as variousother devices capable of receiving and storing data.

Additional Components

Assembly 10 may further include additional components such as akeyboard, mouse, stylus, printer, display screen or other interface thatallows a user to interact with the system such as to input information,issue commands, power the device on and off, perform file management,upgrade software and database information, monitor output, receivefeedback and perform other administrative and non-administrative tasks.

Implant Tracking Method

The present disclosure provides a method of tracking a medical implantincluding providing a reader as described above, placing a transparentsterile sheath over the housing structure of the reader device, placingan implant device having an identifier on the top surface of thetransparent sterile sheath above the aperture of the housing structure,and scanning the identifier of the implant device to record the storeddata.

An advantage of the present disclosure is a method of tracking animplant that allows for greater efficiency and ease of use by theoperator, while maintaining a sterile environment. By using the implanttracking method of the present disclosure, the user does not have tohand record the implant identifying information, which allows a fasteroperating procedure. Nor does the user need to spend time finding thefocal point of the scanner to obtain an accurate read of the identifier.The method of the present disclosure is designed to allow a user toplace the implant with the identifier onto its top surface to obtain anaccurate scan of the identifier and then quickly pass the implant to thesurgeon for implantation, all while not compromising the sterility ofthe implant or surgical field. The scanner takes a scan automaticallywhen the identifier is placed on the top surface of the transparentsheath above the aperture. Thus, the user does not have to bother with abutton to activate the scanner to take a scan while handling in theimplant.

In an embodiment, the identifier is a conventional 4×4 millimeter (mm)matrix, or a non-conventional 2×2 mm, or 1.4×1.4 mm matrix laser etcheddirectly onto the implant device. By having the identifier etcheddirectly into the surface of the medical implant, the user does not haveto bother with scanning external tags to the medical device and removingthe tag prior to the implant procedure, thus allowing for a moreefficient method of tracking.

The method further includes positioning a medical drape to cover theremaining portions of a reader device. In an embodiment, the positioningof the medical drape to cover the remaining portions of a reader deviceincludes unrolling the medical drape from the transparent lens cover toextend around the remaining portions of the reader device. In anembodiment, the positioning of the medical drape to cover the remainingportions of a reader device further includes unrolling the medical drapeto extend around the remaining portions of the reader as well as theuser's arm operating the reader device.

Referring to FIGS. 15-19, an exemplary embodiment of implant trackingassembly 110 is provided that includes various components that aresimilar in form and/or function to various components described abovewith respect to implant tracking assembly 10. It shall be understoodthat various components described below, with like names to thosedescribed above, can include one or more of the aforementioned features,such as shapes, dimensions, materials, configuration, uses, etc., asdescribed above.

FIG. 15 provides a perspective view of implant tracking assembly 110with reader 120, transparent sterile sheath 122, and medical drape 124.FIG. 16 provides a perspective view of reader 120 and transparentsterile sheath 122. Reader 120 includes housing structure 132 havingcover 133 and base 134. Referring to FIG. 17, an exploded perspectiveview of reader 120 and transparent sterile sheath 122 is provided. Base134 includes base top surface 136 having inset groove 138 formedtherein. Inset groove 138 is sized and shaped to fittingly receiveplanar cover bottom surface 135 of cover 133. Base pin holes 141 areprovided, which pass through inset groove 138 to allow vertical pins 140to pass therethrough and secure to pin holes 150 in cover 133. In thisregard, cover 133 can be secured to base 134 without the need forprotruding fasteners. In addition, base 134 includes cavity 139, whichextends from base top surface 136 towards base bottom 143. Cavity 139 isconfigured to receive scanner 126, such that at least a portion ofscanner 126 is recessed below base top surface 136. In at least someembodiments, cavity 139 forms a rectangular shape sized to accommodatescanner 126, while in other embodiments, cavity 139 is sized and shapedto accommodate various other types, sizes, and shapes of scanners.

As seen in FIG. 17, transparent sterile sheath 122 includes generallycircular sheath top surface 175 and cylindrical sheath side wall 176that extends perpendicularly downward from sheath top surface 175 tosheath bottom surface 147. As discussed above, in at least someembodiments, sheath top surface 75 is slightly convex to deflect ambientlight. In addition, transparent sterile sheath 122 includes one or moreradial pin slots 177, which are configured to engage one or more radialpins 152 on cover 133 to provide securement of transparent sterilesheath 122 to reader 120. Transparent sterile sheath 122 is sized andshaped to fit over cover 133. More particularly, cover 133 includesgenerally circular cover top surface 146 and cylindrical side wall 148that extends substantially perpendicularly downward from cover topsurface 146 to flange 151. Flange 151 includes a flange top surface 153,which is configured to receive sheath bottom surface 147 whentransparent sterile sheath 122 is installed. Flange side wall 181extends downward towards base 134 and includes cover bottom surface 135,which is configured to rest on the inset groove 138 when cover 133 isinstalled on base 134. Although transparent sterile sheath 122 isintended to fit over cover 133, one or both of transparent sterilesheath 122 and cover 133 can vary in shape to provide greater or fewerconforming surfaces.

Cover 133 further includes aperture 154 having an aperture perimeter159, where aperture 154 allows scanner 126 to obtain information fromexemplary object 161 (see FIG. 19) when positioned over the aperture154. Aperture 154 may be positioned in one of various locations aboutthe cover 133 to provide suitable access to a user and to accommodatethe field of view of the scanner 126. In addition, if scanner 126 isconfigured to sense identifier 111 having a non-optical component (e.g.,RFID), then the aperture 154 may be omitted entirely and the cover 133comprised of a material that allows signal-based communicationtherethrough, or the cover 133 may include a portion of the covermaterial that is capable of allowing signal-based communicationtherethrough.

Referring to FIG. 18, an exploded perspective view of reader 120 withcover 133 removed is provided. As shown, scanner 126 includes scannerhousing 155 that is secured to scanner mounting structure 130 by one ormore scanner fasteners 163. Scanner mounting structure 130 is shaped toprovide a suitable angle for scanner 126 to read identifiers 111 throughaperture 154. Scanner 126 is connected to plug 165 at one end of cord167. Plug 165 provides a removable connection between cord 167 andscanner 126. Cord 167 connects scanner 126 to another device, such ascomputer 125, as discussed above. Base 134 includes mount passages 169configured to receive mount fasteners 171 that are inserted throughmount passages 169 and secured to scanner mounting structure 130. Inthis manner, scanner 126 can be installed in reader 120 by securingscanner 126 to scanner mounting structure 130, plugging in plug 165, andinserting both into cavity 139 and securing to base 134. Base 134further includes cord passage 173 that extends from cavity 139 tooutside base 134 to provide an outlet for cord 167.

Referring to FIG. 19, a sectional side view taken at line 19-19 of FIG.16 is provided. For illustrative purposes, although medical drape 124was not shown in FIG. 16, it has been included on FIG. 19. As shown inFIG. 19, scanner 126 includes lens assembly 178 extending from scannerhousing 155 and directed towards aperture 154. Lens assembly 178includes front surface 189, where front surface 189 extends to aperture154 along a distance D, where distance D is between about 3 inches toabout 5 inches. In at least some embodiments, scanner 126 is a Model No.DataMan 500 barcode reader, as manufactured by COGNEX located in Natick,Mass. However, in at least some other embodiments, other models, types,and brands of scanners can be provided. The DataMan 500 model, as wellas other types of scanners can be modified from their originalmanufactured form. For example, the original scanner housing can bereduced in size to fit accordingly in cavity 139, such as by removingportions of the scanner housing without damaging or otherwise renderingother necessary portions or components non-functional. Scanner 126 isconfigured to read identifier 111, which is located on object 161, suchas a medical implant, as discussed above. Identifier 111 is communicatedto computer 125 for recordation and/or display. It shall be understoodthat various components described below with like names to thosedescribed above, can include similar functions and features, such asshapes, dimensions, materials, configuration, uses, etc., as describedabove.

Referring to FIG. 20, implant tracking assembly 210 is illustrated,which includes reader 120 enclosed by sheath 222 and drape 224. Asshown, implant tracking assembly 210 is positioned on table 108, whichis representative of one of many types of support surfaces that implanttracking assembly 210 can be situated on during a medical procedure.Additionally, in at least some embodiments, sheath 222 is similar oridentical to transparent sterile sheath 22 and transparent sterilesheath 122. As shown, drape 224 extends from sheath 222, over reader120, and over one or more cords 267 connected to reader 120. Drape 224is secured to sheath 222 in one of a temporary or permanent manner, asdiscussed further below.

Referring to FIGS. 21 and 22, a perspective and side view of sheath 222and drape 224 are illustrated. As shown, sheath 222 includes generallycircular sheath top surface 275 and cylindrical sheath side wall 276that extends perpendicularly downward from sheath top surface 275 tosheath bottom surface 247. In at least some embodiments, sheath topsurface 275 may be slightly convex to deflect ambient light. In at leastsome embodiments, sheath 222 includes an interlocking engagement, suchas one or more radial pin slots 277, which are configured to engage oneor more radial pins 152 on cover 133 to provide securement of sheath 222to reader 120. In other embodiments, sheath 222 may be positioned overcover 133 without an interlocking engagement.

The sheath 222 is sized and shaped to fit over cover 133, as such,although sheath 222 is illustrated as cylindrical, other shapes, such asrectangular, pyramidal, etc. may be utilized sheath 222 to accommodatevarious cover 133 shapes. Similar to transparent sterile sheaths 22 and122, sheath 222 may be transparent, partially transparent or includevaried levels of transparency. In addition, sheath 222 can vary insignal-based transparency as well as optical transparency, whereinsignal-based transparency allows for transmission of a non-opticalscanning signal (not optically dependent) between reader 120 andidentifier 111 (FIG. 19) of an object 161, and therefore, may beindependent of the level of optical transparency or sheath coloring.

As discussed above, cover 133 includes aperture 154 having an apertureperimeter 159, wherein aperture 154 allows scanner 126 to obtaininformation from object 161 (see FIG. 19) when positioned over aperture154. As sheath 222 covers cover 133, the scan will also pass throughsheath 222. To accommodate scanning therethrough, sheath 222 iscomprised of a material that is completely or at least partiallyoptically transparent or signal-based transparent. For example, sheath222 may be substantially opaque, but include a window (not shown) thatis positionable over at least aperture 154 to allow scanner 126 to viewor otherwise communicated with identifier 111 of object 161.

Referring to FIGS. 21 and 22, sheath 222 is shown with drape 224. Thedrape 224 includes drape upper portion 283 and drape lower portion 285,where the drape upper portion 283 includes a first end 291 of drape 224and drape lower portion 285 includes a second end 287 of the drape 224.The drape 224 is secured to and extends radially from sheath side wall276 to enclose reader 120, and various related components, such aselectrical cords and control panels, among other things.

As shown, first end 291 of drape 224 is secured to sheath side wall 276along securement band 293, which encircles sheath side wall 276. Thesecurement can be one of temporary or permanent and in at least someembodiments, provides an airtight seal. In a temporary configuration,drape 224 may be held to sheath 222 by a fastener, such as a rubber bandor clip. Any attachment mechanism may be used to attach drape 224 tosheath side wall 276, although in the present embodiment, first end 291is permanently secured to sheath 222. A permanent securement may beperformed in one of various manners, such as heat welding, heat sealing,chemical adhesives, etc. Drape 224 may be comprised of conventionalmedical drape material or another suitable material, such as vinyl, thatis sterilizable and able to provide a sufficient sterile barrier tolimit or prevent contamination between reader 120 and the surroundingenvironment. Drape 224 may be configured with one or more of variouslevels of transparency, and may be flexible enough to enable use of acontrol panel on reader 120. More particularly, drape 224 may includesufficient flexibility to allow for the manipulation of buttons,calibrating dials, and adjusting knobs that may be associated withreader 120.

FIGS. 21 and 22 provide an embodiment of drape 224 that includes agenerally pyramidal-shaped drape upper portion 283, which extends fromsheath side wall 276 to the drape lower portion 285. The drape lowerportion 285 then extends in a linear manner (i.e., parallel sidewalls)along drape sides 294. FIGS. 23 and 24 provide an embodiment of drape224 that includes a generally conical-shaped drape upper portion 283that extends from sheath side wall 276 to the drape lower portion 285.The drape lower portion 285 then extends in a cylindrical manner (i.e.,parallel sidewalls) along drape sides 294. Although drape lower portion285 is shown and described as extending linearly and cylindrically,drape lower portion 285 may extend in other manners with varied sizesand shapes, and may include a closure (not shown), such as a drawstring,elastic band, etc. at the second end 287.

As shown in FIG. 20, drape lower portion 285 extends over reader 120 anda length of cord(s) 267. In this manner, drape 224 can provide a sterilebarrier that extends for several feet, for example six feet, to allowreader 120 to be situated adjacent to a patient during an implantprocedure. In at least some embodiments, drape 224 may extend to coveradditional components connected to reader 120. Fasteners, such as tiestrap 299, can be used to secure the drape lower portion 285, which cansubstantially limit or prevent air exchange between reader 120 andenvironmental air outside sheath 222 and drape 224, as shown in FIG. 20.The extended drape lower portion 285 allows for positioning of reader120 adjacent to the patient, which allows an assistant to scan objects161 (i.e., implants) and pass them directly to a surgeon forimplantation as quickly and efficiently as possible, and without leavingthe near proximity of the surgeon.

Referring to FIGS. 25 and 26, FIG. 25 illustrates a perspective view ofsheath 222 and medical drape 224 of FIG. 20, in a rolled configuration,and FIG. 26 illustrates a sectional side view taken at line 25-25 ofFIG. 25. Prior to installation of sheath 222 and drape 224, drape 224 issituated in a folded configuration, such as a telescopic fold, tofacilitate convenient and efficient installation of over reader 120 andcord(s) 267. To install sheath 222 and drape 224, the user places thesheath 222 and the folded drape 224 over reader 120 to position thesheath 222 onto cover 133. The sheath 222 is interlocked with cover 133and the drape 224 is then unfolded over the reader 120 and the cord(s)267. In FIG. 25, drape 224 is shown in a folded configuration havingcircular shape. Depending on the shape of the drape 224, particularly,the drape lower portion 285, the drape 224 may have a non-circular orpartially circular shape when folded, such as in a square configuration.

As one skilled in the art would understand, a medical implant of thepresent disclosure includes implants, such as artificial joints, spinalimplants, active medical device implants such as cardiac defibrillators,cardiac pacemakers, gastrointestinal pace makers, and arterial stents,as well as other passive or active implantable medical devices. Inaddition to implants, tracking assembly 10, 110, and 210 can be utilizedto scan other medical devices and/or instruments that may be used duringsurgery, such as a clamp, a scalpel, etc.

The present disclosure includes the following embodiments:

An assembly for tracking implants comprising

-   -   a reader comprising:        -   a scanner,        -   a housing structure comprising            -   a cover comprising                -   an aperture on a top surface of the cover, and            -   a base comprising                -   an inset groove to receive the cover, and        -   optionally a transparent sterile sheath having a top surface            and side walls,        -   wherein the transparent sterile sheath encases the cover of            the housing structure,        -   wherein the scanner is positioned to form a focal point            above the aperture,        -   wherein the scanner is enclosed in the housing structure;    -   a medical drape attached to the side walls of the transparent        sterile sheath; and    -   a computer in communication with the reader.

The assembly wherein the reader further comprises an LED and a scannermounting structure supporting the scanner and LED device wherein thescanner mounting structure is attached to the base.

An assembly for tracking implants comprising

-   -   a handheld reader;    -   a housing structure comprising        -   a cover comprising            -   an aperture on a top surface of the cover, and        -   a base comprising            -   an inset groove to receive the cover;    -   optionally a transparent sterile sheath having a top surface and        side walls,        -   wherein the transparent sterile sheath encases the cover of            the housing structure,        -   wherein the handheld reader is secured to the base to form a            focal point above the aperture,        -   wherein the handheld reader is enclosed in the housing            structure;    -   a medical drape attached to the side walls of the transparent        sterile sheath; and a computer in communication with the        handheld reader.

A reader comprising:

-   -   a scanner;    -   an LED;    -   a scanner mounting structure supporting the scanner and LED;    -   a housing structure comprising        -   a cover comprising            -   an aperture on a top surface of the cover, and        -   a base comprising            -   a top surface to receive the scanner mounting structure,            -   an inset groove to receive the housing structure; and    -   an optional transparent sterile sheath encasing the cover of the        housing structure,    -   wherein the scanner mounting structure is attached to the base    -   wherein the scanner and LED are positioned to form a focal point        above the aperture,    -   wherein the scanner, LED and mounting structure are enclosed in        the housing structure.

The reader wherein the cover further comprises at least one radial pinextending from a side surface of the cover.

The reader wherein the cover further comprises at least one pin hole inthe side of the cover to receive a vertical pin.

The reader wherein the base further comprises at least one vertical pinextending up through the inset groove.

The reader of claim 4 wherein the base further comprises an insetchannel extending radially from the scanner mounting structure to theedge of the top surface of the base, and a removable channel cover.

The reader having a transparent sterile sheath covering the cover of thereader.

The reader having a transparent sterile sheath covering the cover of thereader wherein the transparent sterile sheath further comprises at leastone radial pin slot to receive the radial pin from the cover.

The reader wherein the scanner is capable of scanning 2×2 mil etchedidentifiers.

The reader wherein the top surface of the transparent sheath in the areaabove the aperture of the cover corresponds with the focal point of thescanner and LED.

The reader further comprising a medical drape wherein the medical drapedoes not obstruct the aperture of the housing structure and wherein themedical drape extends radially out from the side surface of the housingstructure.

The reader wherein the transparent sterile sheath has magnifyingabilities.

The reader wherein the transparent sterile sheath is formed of a singlepiece of transparent plastic.

The reader wherein the transparent sterile sheath is disposable.

A method of using a reader comprising the steps of:

-   -   providing a reader comprising:        -   a scanner;        -   an LED;        -   a scanner mounting structure supporting the scanner and LED            device; and        -   a housing structure comprising            -   a cover comprising            -   an aperture on a top surface of the cover, and            -   a base comprising            -   a top surface to receive the scanner mounting structure,            -   an inset groove to receive the housing structure,        -   wherein the scanner mounting structure is attached to the            base        -   wherein the scanner and LED are positioned to form a focal            point above the aperture,        -   wherein the scanner, LED and mounting structure are enclosed            in the housing structure;    -   placing a transparent sterile sheath over the housing structure        of the reader;    -   placing an implant having an identifier onto the top surface of        the transparent sterile sheath above the aperture; and    -   scanning the identifier of the implant to electronically record        the stored data.

The method further comprising the step of positioning a medical drape tocover the remaining portions of a reader.

The method wherein the identifier on the implant is an etched 2×2 matrixcontaining data regarding the implant.

The method wherein positioning the medical drape to cover the remainingportions of a reader device comprises unrolling the medical drape fromthe transparent sterile sheath to extend the medical drape around theremaining portions of the reader device.

A tracking assembly comprising:

-   -   a reader comprising:        -   a housing structure that includes a base and a cover;        -   a scanner having a scanner housing, where the scanner            housing is at least partially positioned in a cavity            provided in the base; and        -   an aperture provided in the cover, where the cover is            configured to receive a transparent sterile sheath to at            least partially encase the cover.

The assembly further comprising a transparent sterile sheath positionedover the cover.

The assembly further comprising a medical drape attached to a side wallof the transparent sterile sheath.

The assembly where the medical drape extends radially and downwardlyfrom the transparent sterile sheath.

The assembly where the medical drape is removably secured to thetransparent sterile sheath by an elastic band.

The assembly where the medical drape is permanently secured to thetransparent sterile sheath.

The assembly where the combination of the transparent sterile sheath andthe medical drape substantially cover the housing structure tosubstantially limit exposure of the housing structure to the atmosphere.

The assembly where the scanner is positioned in the base to form a focalpoint on a top surface of the transparent sterile sheath above theaperture.

The assembly where the reader further comprises a scanner mountingstructure supporting the scanner wherein the scanner mounting structureis positioned substantially in the cavity and secured to the base.

The assembly where the scanner is in communication with a computerdevice located apart from the reader, where the computer device iscapable of receiving and storing information obtained from theidentifier upon being scanned by the reader.

The assembly where the scanner is capable of scanning 2×2 mm etchedidentifiers.

A tracking assembly comprising:

-   -   a reader comprising:        -   a scanner;        -   a scanner mounting structure supporting the scanner;        -   a housing structure that includes a cover with an aperture            on a top surface of the cover and a base secured to the            cover,        -   where the housing structure is configured to receive a one            or more coverings to at least partially enclose the housing            structure,        -   where the scanner mounting structure is secured to the base,            and        -   where the scanner and scanner mounting structure are            substantially enclosed in the housing structure.

The assembly where the one or more coverings includes a transparentsterile sheath positioned over the cover.

The assembly where the one or more coverings further includes a medicaldrape attached to a side wall of the transparent sterile sheath.

The assembly further including a cavity positioned inside the base,where the scanner is substantially positioned inside the cavity.

The assembly where the scanner includes a scanner housing attached tothe scanner mounting structure.

The assembly where the one or more coverings includes a transparentsterile sheath and a medical drape.

The assembly where the one or more coverings includes a transparentsterile sheath and a medical drape attached to a side wall of thetransparent sterile sheath.

The assembly where the scanner is capable of scanning 2×2 mm etchedidentifiers.

The assembly where a top surface of the transparent sheath in an areaabove the aperture of the cover corresponds with the focal point of thescanner.

The assembly where the scanner housing has a lens secured thereto, wherethe lens includes a front surface, where the front surface is situatedbetween about 3 inches to about 5 inches from the aperture of the cover.

The assembly where the transparent sterile sheath includes a sheath topsurface having at least one of a convex portion and a magnifyingportion.

The assembly where the transparent sterile sheath is formed of a singlepiece of transparent plastic.

The assembly where the transparent sterile sheath is disposed of afteridentifiers have been received for all the medical implants implanted ina single patient during an operation.

The assembly where the sheath is rigid and cylindrical in shape.

The assembly where the sheath is cylindrical in shape and includes alocking mechanism.

The assembly where the base of the reader includes a diameter thatextends between about 6 inches to about 10 inches.

The assembly where the scanner is connected via a cord to a computerlocated outside the housing structure.

A method of using a tracking assembly comprising the steps of:

-   -   providing a tracking assembly comprising:        -   a reader comprising:            -   a scanner;            -   a scanner mounting structure supporting the scanner;            -   a housing structure comprising:                -   a cover comprising:                -    an aperture on a top surface of the cover; and                -   a base secured to the cover, where the base includes                    a cavity;            -   where the scanner mounting structure is positioned in                the cavity of the base, and where the scanner and                scanner mounting structure are substantially enclosed in                the housing structure;    -   covering the cover with a transparent sterile sheath;    -   placing an implant having an identifier over the aperture; and    -   scanning the identifier of the implant to electronically record        the implant data.

The method further including attaching a medical drape to thetransparent sterile sheath.

The method where the identifier on the implant is an etched 1.4×1.4 mmmatrix containing data regarding the implant.

The method further including sensing an implant having an identifier,when the implant is positioned above the aperture and automaticallyobtaining a scan of the identifier.

A tracking assembly comprising:

-   -   a reader comprising:        -   a housing structure that includes a base and a cover; and        -   a scanner positioned in the housing structure for scanning a            medical implant;    -   a sterile sheath positioned on the cover; and    -   a sterile drape secured to the sterile sheath, where the sterile        drape and the sterile sheath substantially enclose the housing        structure.

The assembly where the sterile drape is permanently secured to thesterile sheath.

The assembly where the sterile drape includes a drape lower portion thatat least partially encloses one or more cords extending from the housingstructure.

The assembly where the sterile drape extends radially and downwardlyfrom the sterile sheath.

The assembly where the sterile drape is removably secured to the sterilesheath.

The assembly where the permanent securement of the drape to the sterilesheath provides an airtight seal therebetween.

The assembly further comprising an aperture in the cover to allowoptical signals to pass between the scanner and the medical implant.

The assembly where the scanner is positioned in the base to form a focalpoint on a top surface of the sterile sheath above the aperture.

The assembly where the base further comprises a cavity for at leastpartially receiving the scanner.

The assembly where the scanner is in communication with a computerdevice located apart from the reader, where the computer device iscapable of receiving and storing information obtained from the medicalimplant upon being scanned by the reader.

The assembly where the sterile sheath is formed of a single piece oftransparent plastic.

A tracking assembly comprising:

-   -   a reader comprising:        -   a scanner;        -   a scanner mounting structure supporting the scanner;        -   a housing structure that includes a cover with an aperture            and a base secured to the cover,        -   a sheath positioned on the cover; and        -   a drape permanently secured to the sterile sheath, where the            drape and sheath substantially enclose the housing            structure,        -   where the scanner mounting structure is secured to the base,            and        -   where the scanner and scanner mounting structure are            substantially enclosed in the housing structure.

A tracking assembly comprising:

-   -   a reader comprising:        -   a scanner;        -   a scanner mounting structure supporting the scanner;        -   a housing structure that includes a cover with an aperture            and a base secured to the cover,        -   a sheath positioned on the cover; and        -   a drape permanently secured to the sterile sheath along a            securement band, where the drape and sheath substantially            enclose the housing structure,        -   where the scanner mounting structure is secured to the base,            and        -   where the scanner and scanner mounting structure are            substantially enclosed in the housing structure.

The assembly where the drape is permanently secured to the sheath usingheat to melt a portion of the drape and the sheath along the securementband to form a bond.

The assembly where the drape is permanently secured to the sheath usinga chemical adhesive.

The assembly further including a cavity positioned inside the base,where the scanner is substantially positioned inside the cavity.

The assembly where the scanner includes a scanner housing attached tothe scanner mounting structure.

The assembly where the scanner is capable of scanning 2×2 mm etchedidentifiers.

The assembly where the aperture of the cover corresponds with the focalpoint of the scanner.

The assembly where the sterile drape is comprised of at least one ofelastomer, plastic, rubber, polyethylene, and polypropylene.

The assembly where an optically transparent portion of the sheath issituated in an area above the aperture of the cover.

The assembly where the scanner housing has a lens secured thereto, wherethe lens includes a front surface, where the front surface is situatedbetween about 3 inches to about 5 inches from the aperture of the cover.

The assembly where the sterile sheath includes a sterile sheath topsurface having at least one of a convex portion and a magnifyingportion.

The assembly where the sterile sheath is formed of a single piece oftransparent plastic.

The assembly where the sterile sheath is disposed of after identifiershave been received for all the medical implants implanted in a singlepatient during an operation.

The assembly where the reader is positionable adjacent to a patientduring a surgical procedure.

The assembly where the scanner is connected via a cord to a computerlocated outside the housing structure.

A method of using a tracking assembly comprising the steps of:

-   -   providing a tracking assembly comprising:        -   a reader comprising:            -   a scanner;            -   a scanner mounting structure supporting the scanner; and            -   a housing structure comprising:                -   a cover comprising:                -    an aperture in the cover; and                -    a base secured to the cover, where the base                    includes a cavity,            -   where the scanner mounting structure is positioned in                the cavity of the base, and where the scanner and                scanner mounting structure are substantially enclosed in                the housing structure;    -   covering the cover with a sterile sheath and further enclosing        the reader with a drape secured to the sterile sheath;    -   positioning the reader adjacent to a surgical patient;    -   placing an implant having an identifier over the aperture; and    -   scanning the identifier of the implant to electronically record        the implant data.

The method where the medical drape includes a drape upper portion and adrape lower portion, where the drape lower portion extends beyond thehousing structure.

The method where further enclosing the reader with the drape furtherincludes unfolding the drape over the housing structure and extending alower portion over the drape to at least partially cover one or morecords extending from the housing structure.

The method further including enclosing the housing structure and allassociated cords that extending therefrom, for a distance of at leastfour feet from the housing structure.

The method where the drape is in a telescopically folded configurationprior to unfolding over the housing structure.

Although the invention has been described with certain detail throughthe preceding description of the preferred embodiments, this detail isfor the primary purpose of illustration. Many variations andmodifications can be made by one skilled in the art without departingfrom the spirit and scope of the invention as described in the followingclaims.

What is claimed is:
 1. A tracking assembly comprising: a readercomprising: a housing structure that includes a base and a cover; and ascanner positioned in the housing structure for scanning a medicalimplant; a sterile sheath positioned on the cover; and a sterile drapesecured to the sterile sheath, where the sterile drape and the sterilesheath substantially enclose the housing structure.
 2. The assembly ofclaim 1, where the sterile drape is permanently secured to the sterilesheath.
 3. The assembly of claim 2, where the sterile drape includes adrape lower portion that at least partially encloses one or more cordsextending from the housing structure.
 4. The assembly of claim 2, wherethe sterile drape extends radially and downwardly from the sterilesheath.
 5. The assembly of claim 2, where the sterile drape is comprisedof at least one of elastomer, plastic, rubber, polyethylene, andpolypropylene.
 6. The assembly of claim 1, where the sterile drape isremovably secured to the sterile sheath.
 7. The assembly of claim 1,further comprising an aperture in the cover to allow optical signals topass between the scanner and the medical implant.
 8. The assembly ofclaim 7, where the scanner is positioned in the base to form a focalpoint on a surface of the sterile sheath positioned above the aperture.9. The assembly of claim 8, where the base further comprises a cavityfor at least partially receiving the scanner.
 10. The assembly of claim1, where the scanner is in communication with a computer device locatedapart from the reader, where the computer device is capable of receivingand storing information obtained from a medical implant upon beingscanned by the reader.
 11. The assembly of claim 1, where the sterilesheath is formed of a single piece of transparent plastic.
 12. Atracking assembly comprising: a reader comprising: a scanner; a scannermounting structure supporting the scanner; a housing structure thatincludes a cover with an aperture and a base secured to the cover; asheath positioned on the cover; and a drape permanently secured to thesterile sheath, where the drape and sheath substantially enclose thehousing structure, where the scanner mounting structure is secured tothe base, and where the scanner and scanner mounting structure aresubstantially enclosed in the housing structure.
 13. The assembly ofclaim 12, where the sheath is rigid and cylindrical in shape.
 14. Theassembly of claim 12, where the sheath is cylindrical in shape andincludes a locking mechanism.
 15. The assembly of claim 12, furtherincluding a cavity positioned inside the base, where the scanner issubstantially positioned inside the cavity.
 16. The assembly of claim12, where the scanner includes a scanner housing attached to the scannermounting structure.
 17. The assembly of claim 16, where the scanner iscapable of scanning 2×2 mm etched identifiers.
 18. The assembly of claim16, where the scanner housing has a lens secured thereto, where the lensincludes a front surface, where the front surface is situated betweenabout 3 inches to about 5 inches from the aperture of the cover.
 19. Theassembly of claim 12, where the aperture of the cover corresponds with afocal point of the scanner.
 20. The assembly of claim 19, where anoptically transparent portion of the sheath is situated in an area abovethe aperture of the cover.
 21. The assembly of claim 19, where thesterile sheath includes a sterile sheath top surface having at least oneof a convex portion and a magnifying portion.
 22. The assembly of claim12, where the sterile sheath is formed of a single piece of transparentplastic.
 23. The assembly of claim 12, where the sterile sheath isdisposed of after identifiers have been received for all the medicalimplants implanted in a single patient during an operation.
 24. Theassembly of claim 12, where the scanner is connected via a cord to acomputer located outside the housing structure.
 25. A method of using atracking assembly comprising the steps of: providing a tracking assemblycomprising: a reader comprising: a scanner; a scanner mounting structuresupporting the scanner; and a housing structure comprising: a covercomprising:  an aperture in the cover; and  a base secured to the cover,where the base includes a cavity, where the scanner mounting structureis positioned in the cavity of the base, and where the scanner andscanner mounting structure are substantially enclosed in the housingstructure; covering the cover with a sterile sheath and furtherenclosing the reader with a drape secured to the sterile sheath;positioning the reader adjacent to a surgical patient; placing animplant having an identifier over the aperture; and scanning theidentifier of the implant to electronically record the implant data.